Stunning Brutalist Architecture in Eastern Europe #9 The Druzhba Sanatorium What exactly is the The Druzhba Sanatorium, you ask? Apart from being the most impressive form of Brutalist architecture we have ever seen, this structure is also considered the masterpiece of its architect Igor Vasilievsky and engineer Yurij Stefanchuk. The Druzhba sanatorium was built from 1983 till 1985, and it even contains a sea-water swimming pool.